From: Gabriel Corona <gabriel.corona@loria.fr>
Date: Fri, 7 Feb 2014 14:44:15 +0000 (+0100)
Subject: [mc] Fix sefault where a variable has no name
X-Git-Tag: v3_11~199^2~2^2~26^2~2
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/57d96d2cf3a593395ef6657f07c06b57dcdac400?ds=sidebyside

[mc] Fix sefault where a variable has no name

This happen when optimisation is enabled.

As the current code needs a name for the variable, we generate a fake
one. We might want to remove this assumption.
---

diff --git a/src/mc/mc_dwarf.c b/src/mc/mc_dwarf.c
index 84e42607ce..5839708020 100644
--- a/src/mc/mc_dwarf.c
+++ b/src/mc/mc_dwarf.c
@@ -795,6 +795,8 @@ static dw_location_t MC_dwarf_get_expression(Dwarf_Op* expr,  size_t len) {
   return loc;
 }
 
+static int mc_anonymous_variable_index = 0;
+
 static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, Dwarf_Die* unit, dw_frame_t frame) {
   // Drop declaration:
   if (MC_dwarf_attr_flag(die, DW_AT_declaration, false))
@@ -848,6 +850,12 @@ static dw_variable_t MC_die_to_variable(mc_object_info_t info, Dwarf_Die* die, D
       klass, klass, (void*) variable->dwarf_offset, variable->name);
   }
 
+  // The current code needs a variable name,
+  // generate a fake one:
+  if(!variable->name) {
+    variable->name = bprintf("@anonymous#%i", mc_anonymous_variable_index++);
+  }
+
   return variable;
 }